Grain-tank.



0. A. P. TURNER. GRAIN TANK.

APPLIOATION FILED NOV. 24, 1902.

N0 MODEL.

,2 SHEETS-SHEET 1.

WITNESSES I A lNVENTUH 6:. W WW2. 0.1 jam PATENTED JUNE 14, 1904:.

C. A. P. TURNER.

GRAIN TANK.

PATENTED JUNE 14, 1:904.

APPIIJIOATION FILED NOV.24, 1902.

N0 MODEL.

2 SHEETS-SHEET 2.

E; c Y w a (1/ WITNESSES E i lNvENTuH @CZ? Quad, awmw lowing is a UNITED bTATES Patented June 14, 1904.

PATENT UFFICE.

GRAIN-TANK.

SPECIFICATIONforming part of Letters Patent No. 762,564, dated June 14, 1904.

Application filed November 24, 1902. Serial No. 132,691. (No model.)

T (L67 whom it may concern:

Be it known that I, CLAUDE A. P. TURNER, of Minneapolis, county of Hennepin, and State of Minnesota, have made new and useful Improvements in Grain-Tanks, of which the folfull, clear, and exact description, reference being had to the accompanying drawings, which form apart of this specificaare good tion.

My invention relates particularly to cylindrical grain-tanks, my purpose being to overcome some of the defects common to graintanks of this class.

In cylindrical grain-tanks as at present constructed it is a common practice to use plates much heavier than are necessary to withstand the lateral thrust of the grain in order to retain their shapeunder the side friction of the grain when filling and emptying them. It is also a common practice in the construction of cylindricalgrain-tanks to lap the plates outward at their upper edges for convenience in calking.

In my construction I use side plates of suflicient strength to withstand the lateral thrust of the grain and stiffen them against buckling vertically under the grain friction by means of verticalribs located at suitable intervals, as shown inthe drawings. (See Figs. 2 and 1.)

Another defect in cylindrical grain-tanks as at present constructed is in the construction of their roof-shells, which being of metal conductors of heat and being exposed to the direct rays of the sun subject the upper surface of the grain to considerable variatiorl of temperature, accompanied by condensation upon the outer side of roof, which I avoid somewhat by constructing my roofs of non-conducting material such, for example, as concrete and expanded metal covered with the usual coating of pitch and gravel or of tiles supported by asuitable framework of metal, which tiles are in turncovered with the before-mentioned pitch and gravel.

Again, experience with concrete bottoms of grain-tanks laid upon sand filling shows a considerable amount of damaged grain either as the result'of moisture working through the concrete or by condensation upon the floor due to the cement beingof a lower temperature than the grain thereupon.

In my construction I lay a course of concrete upon the exterior wall, the interior walls and the sand filling lying between the said exterior and interior walls, upon which concrete I place a course of hollow tiles, upon which tiles in turn I lay another course of. cement, thus forming a dry floor.

In the drawings, Figure 1 is a side elevation of my tank and a sectional view of its foundation; Fig. 2, a vertical section of the tank foundation and floor; Fig. 3, a top view with the roof-covering removed; Fig. 4, a horizontal section of Fig. 1, taken on the line 4 4; Fig. 5, anenlarged vertical section of the roof; Fig. 6, a fragmentary horizontal section of the shell; Fig. 7 another fragmentary section of the shell, a cross-section of one of the ribs and of a washer, and a relief view of a I rivet; Fig. 8, a vertical section of the base or foundation, taken longitudinally with the vault; and Fig. 9, the same, but taken transversely to the vault.

Similar letters refer to similar parts throughout the several .views.

A is the foundation; roof, and D the floor.

The foundation A consists of the exterior wall a, which supports the superstructure, the interior walls I), which walls form the vault 0, into which the grain falls and from which it is drawn in emptying the tank, and of the sand filling (Z, lying between the said exterior and interior walls. .Having con-' strueted the foundation A, erect thereon the tank B, which tank rests upon and is supported by the exterior wall a. a

The construction of the tank B is as follows: Taking a requisite number of steel plates 0 of the proper weight to form a circle of the desired diameter, 1 scarf theirends and rivet them together end to end, thus forming my first o'i' lower section f. To this lower-seetion j I rivet other plates, thus building my tank to the required height, always having the lower edges of the plates overlap (lap outsidel'the upper edges of the plates next below them, thus producing horizontal joints B, the tank; 0, the

the tank ii to the nuaptco to shc unnocc wry. 'i: "ion the platcs and to pro-- vent thcir bucll w vorluiL-tliy by tho 'ain l 1 ictic-n wocn lillin J l crcct vertical ribs ind emptying the tanks, 5/ suitable intervals, to plates 1'. in ii voting the plates r to the rib: i place \insliors 1 botwcen the idpla as a and the said rihs, using for the purpose ron washers or the lilac, through which 1 pass tl' flirt bel orc vino, this construction allz: H hug the n: tor plates than are generally used,

'lhc construction of the roof is as follows:

To the upper edge of the top section of plates if rivet or bolt the lower cnds of my radial trusses 2', (the raftcrs,) the upper converging ends of which i rii'ct or bolt to the ring which ring constitutes the opcnin g' in my roof through which tho grain is spouted in filling my tank. Upon these f-ri l la" a coursc of expanded inctal Z, upon which inctal l sprcul a course of concrete which concrete in turn l covcr with a coat ot' pitch and 'i'avcl 1/), thus forming '1, watcr-tiglit roof oi coin-- paratix'ely norrcondnoting i'natcrial, or] may ay a course ol tilcs n upon my concrete lilling said tiles being" arrangcd in radial courscs oxtoi'uiling from the ring j to the outer cdg'c of the root, (the caves) and therefore adapted to carry on" any accumulation of moisture either from condensation therein or percolation thcreto, and in turn cover my tiles with the usual coating of pitch nnd gravel, thus forming a non-condcnsino or dry root,

The construction ol the iioor l) is as follows; Upon the foundation A (which foundation con-- sists of the exterior wall a, the interior r is t, and the sand filling 1/, lying between the said eatcrior and i ntcrior walls) 1 syn-cad a course oi concrete 0, which concrete extends 'lroin' tho circumferential wall of the tank B to the vault 1*. Upon this coursc oi concictc l thcn lay hollow tiles 7:, arranging their] (proton ably) in downwanlly-inclincd radial courses mvtcnding from the circumferential walls of vault a, in which their converging open suds tin-i'ninate. 'lhcse t; on in turn l cover with a second coursc concrete or ccnicnt 1 thus constructing)? an inn inclincd drained floor. 7

The hoppers a" arc formed of concrete 01' UP" l'l'lClllj. Illhey scrvc to conduct the grain into the vault 1; through suitable s muts s, from which in turn it passes to the conveyor.

W hat 1 claim as now and desire to securiie i. in a. cylindrical grain-tank, the combination of the floor consisting 0i" alternate layers 0." conient and tiles, a shell mountcd thcrcon,

I constructcd of stccl plots-s scarfcd and rivoted at their si es, werlnppcd and rivctcd at their horizontal joints, and still'ened against buciilii'ig rertir tllgr by properly-disposcd ribs to which. the plat-cs forming the 5 id shell ure- .vaicr and rcudcriiur cz'ilhinn; l rivctcd l l l l f l l and a roof for said shcll consisting; oi a mctallic frame and ceinont, and having a water; nooi co'vcri ng, as pi i ;h and ,1 cl thoroon, substantially as shown and :loseribml 2. in a grain-tank of the cl aractor heroin shown and describe tho combination in the floor, of n. course of concrete laid upon and sup iuirtcd by the exterior and interior walls, and the said sand fill ing intcrinediate the said "1c!" and interior walls; a course of tiles laid upon the said. coursc of concrete, and a second coursc oi. concrete or eeincnt laid upon the said tilcs, suhstsntia ly as shown and dcscribcd.

3. in grain-tank of the character heroin shown and described, the shellconstructcd of steel plates scar-fol and rivctcd at their ends, and. stiiicned vertically, b pro'pcrlydisposed vertical ribs, to which rho said plates are riveted, suhi'atantially as shown and for thc purpesos spccilicd.

ft. in a g 'ntauk of thc character hcrcin shown and base or foundation, said base inundation consisting of exterior and interior walls of masonry; sand filling intermediate the said descrihcd, the combination o; 2

walls, a course of concretc or cement laid upon the said sand filling, a course of tiles laid upon thc said covering of concrete or cement laid upon said course of tilcs, and a tank mounted upon the said foundation, said tank coi'isisting of scar-fed, lapped and riveted plates forming a shell, and vertical ribs to stiil'cn the'said shell; of tho rool C consisting of a metal frame, a course of conc-retc or ccinent laid upon the said frame, a course oi l'ilcs laid upon the said course of concrete or cement, and a corering oi pitch and gravel laid upon the said course cl tiles, :nibstantially as sl'eown and dcscribed in a grain-tank oi tho chm-actor herein shown and described, the base or foundation consisting of exterior and interior walls, sand filling intermediate the said exterior and interior walls, a course of concrete or cement laid upon he said walls and filling, a coursc of tiles laid upon the said coursc oi. concrete or ccment, and a covcring' of concrctc or cement laid upon the said course of tiles, substantially shown and for the purposes spc "ilied.

6. in a graiirtank oi the character herein Shown and dcsrrilmd, having a foundation and a vault thercin, the lloor 1) consisting; of a laycr of concrete or cement laid upon the said foundation, tiles laid upon the said foundation, said tiles being ai "ringed 'n radial cours s and terminatii in the said vault, and a second course or covering of concrete or ccmcnt laid upon the said tilcs, substanti: ll y as show and described.

7. in a oraintaul-r ol the ch shown and dcscribcd the comb or foundationA the tank course of concrete, and a.

IIO

thereon, and the roof C; said base or founda- }tion consisting of exterior and interior Walls the said sand filling, a course of tiles laid upon the said course of concrete or cement,

and a covering of concrete or cement laidupon the said course of tiles; said tank consisting of scarfed lapped and riveted plates to form a shell, vertical ribs to which the'said shell is riveted, and washers lying between the said shell and the said ribs, through which the said rivets pass; and the said roof consisting of a metal frame, a course of concrete or cement laid upon the said frame, a course of tiles laid upon the said course of concrete or cement, and a cover of pitch and gravel laid upon the said course of tiles, substair tially as shown and described.

CLAUDE A.v P. TURNER Viltnesses:

F. G. OBRIEN,

E. J. OBRIEN. 

